update charcode in the sdk to the nnbd version

Change-Id: I737ef6499d459b8f0a462e82038743547bbd5f99
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/154340
Reviewed-by: Nate Bosch <nbosch@google.com>
Commit-Queue: Jake Macdonald <jakemac@google.com>

.dart_tool/package_config.json

@@ -11,7 +11,7 @@
     "constraint, update this by running tools/generate_package_config.dart."
   ],
   "configVersion": 2,
-  "generated": "2020-07-09T13:10:41.742079",
+  "generated": "2020-07-14T07:50:57.318843",
   "generator": "tools/generate_package_config.dart",
   "packages": [
     {
@@ -107,7 +107,7 @@
       "name": "charcode",
       "rootUri": "../third_party/pkg/charcode",
       "packageUri": "lib/",
-      "languageVersion": "2.0"
+      "languageVersion": "2.9"
     },
     {
       "name": "cli_util",
@@ -375,7 +375,7 @@
       "name": "matcher",
       "rootUri": "../third_party/pkg/matcher",
       "packageUri": "lib/",
-      "languageVersion": "2.4"
+      "languageVersion": "2.7"
     },
     {
       "name": "meta",
@@ -713,4 +713,4 @@
       "languageVersion": "2.4"
     }
   ]
-}
+}

DEPS

@@ -73,7 +73,7 @@ vars = {
   "boringssl_gen_rev": "429ccb1877f7987a6f3988228bc2440e61293499",
   "boringssl_rev" : "4dfd5af70191b068aebe567b8e29ce108cee85ce",
   "browser-compat-data_tag": "v1.0.22",
-  "charcode_rev": "9085e6b6127f084d66c0a94810a808121459012a",
+  "charcode_rev": "af1e2d59a9c383da94f99ea51dac4b93fb0626c4",
   "chrome_rev" : "19997",
   "cli_util_tag" : "0.1.4",
   "collection_rev": "80f5b6de8a8d8d584732a71bb59912da3e44883b",